HIGH-QUALITY FAN: Quiet, ENERGY STAR certified exhaust fan operates with 80 CFM to help control air quality is powerful enough for rooms (including bathroom) up to 75 sq. ft. EASY INSTALLATION: Easy to install new/replace existing product with the telescoping mounting frame can fit any type of joist or truss system, retrofit installations that can be done entirely from the room-side – no attic access required ENERGY-EFFICIENT LIGHTING: Includes an integrated dimmable soft white LED module with a life capacity of 25,000 hours QSTREAM SOUND DESIGN: Airflow-smoothing baffles reduce turbulence, allowing the wheel to turn slower and quieter without losing airflow QFLOW DAMPER DESIGN: Unique duct connector and damper design reduce static pressure for a smoother, slower, and quieter fan operation and seals tightly when closed to prevent backdrafts